lession.squid: add (similar) #squid.init file

Author: icy

README.md

@@ -240,7 +240,7 @@ that tries to clean up `squid`'s `PID` directory:
 
 That is similar to this script
   https://github.com/mozilla-services/squid-rpm/blob/47880414f17affdbb634b6f0a19a342995fb60f6/SOURCES/squid.init,
-whose copy is in `examples/squid.init`. Because `RedHat` doesn't publish
+whose copy is in `examples/squid.init.sh`. Because `RedHat` doesn't publish
 their code, we can only _guess_ that they put `SQUID_PIDFILE_DIR` in some
 external configuration file (like `Debian` often uses `/etc/default/`),
 and for some `UNKNOWN` reason, `$SQUID_PIDFILE_DIR` is expanded to `empty`.

examples/squid.init.sh

@@ -0,0 +1,198 @@
+#!/bin/bash
+
+cat 1>&2 <<-EOF
+  This script is not to run on any system.
+  Anh K. Huynh adds this banner to prevent script from being used.
+
+  The original script is here
+    https://github.com/mozilla-services/squid-rpm/blob/47880414f17affdbb634b6f0a19a342995fb60f6/SOURCES/squid.init
+EOF
+
+exit 0
+
+# chkconfig: - 90 25
+# pidfile: /var/run/squid.pid
+# config: /etc/squid/squid.conf
+#
+### BEGIN INIT INFO
+# Provides: squid
+# Short-Description: starting and stopping Squid Internet Object Cache
+# Description: Squid - Internet Object Cache. Internet object caching is \
+#       a way to store requested Internet objects (i.e., data available \
+#       via the HTTP, FTP, and gopher protocols) on a system closer to the \
+#       requesting site than to the source. Web browsers can then use the \
+#       local Squid cache as a proxy HTTP server, reducing access time as \
+#       well as bandwidth consumption.
+### END INIT INFO
+
+
+PATH=/usr/bin:/sbin:/bin:/usr/sbin
+export PATH
+
+# Source function library.
+. /etc/rc.d/init.d/functions
+
+# Source networking configuration.
+. /etc/sysconfig/network
+
+if [ -f /etc/sysconfig/squid ]; then
+	. /etc/sysconfig/squid
+fi
+
+# don't raise an error if the config file is incomplete
+# set defaults instead:
+SQUID_OPTS=${SQUID_OPTS:-""}
+SQUID_PIDFILE_TIMEOUT=${SQUID_PIDFILE_TIMEOUT:-20}
+SQUID_SHUTDOWN_TIMEOUT=${SQUID_SHUTDOWN_TIMEOUT:-100}
+SQUID_CONF=${SQUID_CONF:-"/etc/squid/squid.conf"}
+SQUID_PIDFILE_DIR="/var/run/squid"
+SQUID_USER="squid"
+SQUID_DIR="squid"
+
+# determine the name of the squid binary
+[ -f /usr/sbin/squid ] && SQUID=squid
+
+prog="$SQUID"
+
+# determine which one is the cache_swap directory
+CACHE_SWAP=`sed -e 's/#.*//g' $SQUID_CONF | \
+	grep cache_dir | awk '{ print $3 }'`
+
+RETVAL=0
+
+probe() {
+	# Check that networking is up.
+	[ ${NETWORKING} = "no" ] && exit 1
+
+	[ `id -u` -ne 0 ] && exit 4
+
+	# check if the squid conf file is present
+	[ -f $SQUID_CONF ] || exit 6
+}
+
+start() {
+	# Check if $SQUID_PIDFILE_DIR exists and if not, lets create it and give squid permissions.
+	if [ ! -d $SQUID_PIDFILE_DIR ] ; then mkdir $SQUID_PIDFILE_DIR ; chown -R $SQUID_USER.$SQUID_DIR $SQUID_PIDFILE_DIR; fi
+	probe
+
+	parse=`$SQUID -k parse -f $SQUID_CONF 2>&1`
+	RETVAL=$?
+	if [ $RETVAL -ne 0 ]; then
+		echo -n $"Starting $prog: "
+		echo_failure
+		echo
+		echo "$parse"
+		return 1
+	fi
+	for adir in $CACHE_SWAP; do
+		if [ ! -d $adir/00 ]; then
+			echo -n "init_cache_dir $adir... "
+			$SQUID -z -F -f $SQUID_CONF >> /var/log/squid/squid.out 2>&1
+		fi
+	done
+	echo -n $"Starting $prog: "
+	$SQUID $SQUID_OPTS -f $SQUID_CONF >> /var/log/squid/squid.out 2>&1
+	RETVAL=$?
+	if [ $RETVAL -eq 0 ]; then
+		timeout=0;
+		while : ; do
+			[ ! -f /var/run/squid.pid ] || break
+			if [ $timeout -ge $SQUID_PIDFILE_TIMEOUT ]; then
+				RETVAL=1
+				break
+			fi
+			sleep 1 && echo -n "."
+			timeout=$((timeout+1))
+		done
+	fi
+	[ $RETVAL -eq 0 ] && touch /var/lock/subsys/$SQUID
+	[ $RETVAL -eq 0 ] && echo_success
+	[ $RETVAL -ne 0 ] && echo_failure
+	echo
+	return $RETVAL
+}
+
+stop() {
+	echo -n $"Stopping $prog: "
+	$SQUID -k check -f $SQUID_CONF >> /var/log/squid/squid.out 2>&1
+	RETVAL=$?
+	if [ $RETVAL -eq 0 ] ; then
+		$SQUID -k shutdown -f $SQUID_CONF &
+		rm -f /var/lock/subsys/$SQUID
+		timeout=0
+		while : ; do
+			[ -f /var/run/squid.pid ] || break
+			if [ $timeout -ge $SQUID_SHUTDOWN_TIMEOUT ]; then
+				echo
+				return 1
+			fi
+			sleep 2 && echo -n "."
+			timeout=$((timeout+2))
+		done
+		echo_success
+		echo
+	else
+		echo_failure
+		if [ ! -e /var/lock/subsys/$SQUID ]; then
+			RETVAL=0
+		fi
+		echo
+	fi
+	rm -rf $SQUID_PIDFILE_DIR/*
+	return $RETVAL
+}
+
+reload() {
+	$SQUID $SQUID_OPTS -k reconfigure -f $SQUID_CONF
+}
+
+restart() {
+	stop
+	rm -rf $SQUID_PIDFILE_DIR/*
+	start
+}
+
+condrestart() {
+	[ -e /var/lock/subsys/squid ] && restart || :
+}
+
+rhstatus() {
+	status $SQUID && $SQUID -k check -f $SQUID_CONF
+}
+
+
+case "$1" in
+start)
+	start
+	;;
+
+stop)
+	stop
+	;;
+
+reload|force-reload)
+	reload
+	;;
+
+restart)
+	restart
+	;;
+
+condrestart|try-restart)
+	condrestart
+	;;
+
+status)
+	rhstatus
+	;;
+
+probe)
+	probe
+	;;
+
+*)
+	echo $"Usage: $0 {start|stop|status|reload|force-reload|restart|try-restart|probe}"
+	exit 2
+esac
+
+exit $?